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Home Topics Infectious Diseases Infections A-Z West Nile Virus Surveillance for Human West Nile Virus in the UK ›  Surveillance for Human West Nile Virus in the UK

Surveillance for Human West Nile Virus in the UK

Since 2002 surveillance for human cases of West Nile virus in the UK has taken place every year between 1st June and 31st October. A case is defined as an adult (particularly those aged 50 years and over) with symptoms of encephalitis, meningo-encephalitis, aseptic meningitis or acute flaccid paralysis, who presents with no travel history outside the UK.

 

Cases of WNV reported in the UK 2004-2013 

Year
Number of Cases
Travel
Reference
2013 0 - -
2012 0 - -
2011
0
 -  -
2010
0
 –  –
2009
0
 –  –
2008
0
 –  –
2007
1
Canada

HPR 2(6), 8 Feb 2008 p.16-17

in Emerging Infections Update: July-December 2007

2006 
1
Canada

HPR 1(6), 9 Feb 2007 p.9-10

in Emerging Infections Update: July-December 2006

2005†
0
 –  –
2004†
0
 –  –

†Although no cases of WNV were reported in the UK in these years three cases were reported in residents of the Republic of Ireland (ROI). Two cases in 2004 had travelled to the Algarve in Portugal (Connell et al, 2004) and one case in 2005 had been to the USA. Before 2004 no cases of WNV were reported in either the UK or the ROI. WNV surveillance began in 2002 but no cases were reported in 2002 or 2003.